Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide.

Paul Bachi University of Kentucky Research and Education Center

Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide.

Paul Bachi University of Kentucky Research and Education Center

Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide.

Paul Bachi University of Kentucky Research and Education Center

Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide.